The Unglamorous Work That Gets Your Project Approved.
Septic systems designed, permitted, installed, and maintained in-house — by the same team that handles the permitting and knows the local reviewers. Aerobic and conventional, residential and commercial.
Aerobic Septic
Conventional Septic
Septic Design
TCEQ / OSSF Permitting
Installation & Repair
Maintenance
02 - Septic Systems
Aerobic and
Aerobic and
Conventional Septic
Systems. Designed,
Permitted, Installed,
Maintained.
Texas-licensed septic installer under TCEQ Chapter 285. ENGCO designs, engineers, permits, installs, and maintains on-site sewage facilities across the Greater Houston region and surrounding counties. Single-family residential, commercial, and replacement work are handled in-house.
What We Install and Service- Aerobic Treatment Units with surface application
- Conventional gravity-fed septic systems
- Drip irrigation aerobic systems
- Pressure-dosed conventional systems
- Commercial septic systems
- Septic system replacement and major repair
- Real estate transaction inspections and evaluations
- Routine maintenance and service contracts
- Tank pumping coordination
- County Authorized Agent permit applications
Septic Systems · Texas
03 - Frequently Asked
Questions
Questions
owners ask
before they
engage.
Straight answers to what property owners, builders, and developers ask most about septic design, permitting, installation, and service across Texas.
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Typical costs range from $8,000–$15,000 depending on site conditions, soil type, system size, distance to utilities, and whether electrical service or pumps are required.
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Most new aerobic septic projects run 6–12 weeks from initial evaluation through permitting, installation, and final county inspection. County Authorized Agent review time, weather, site access, and system complexity can affect the schedule.
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Yes. Aerobic systems require an active maintenance contract with a licensed provider. Maintenance typically includes inspections, annual reporting to the county Authorized Agent, sample collection where required, and service support for alarms or system issues.
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ENGCO starts with diagnostic review. Pump, control panel, electrical, line, or distribution issues may be repairable. Drain field saturation, tank failure, end-of-life systems, or noncompliant legacy systems may require partial or full replacement.
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This is often possible for typical Texas option periods, but timing must be confirmed during scheduling. Weather, property access, tank pumping coordination, and permit-record availability can affect turnaround.
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ENGCO works across the Greater Houston region and many surrounding Texas counties. If you are not sure whether we cover your area, contact the team — we may already have project history or county Authorized Agent relationships there.
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Conventional systems use gravity and require suitable soils and larger lots. Aerobic systems use forced air treatment, can work on smaller or more constrained lots, and require an active maintenance contract. The correct system depends on soil conditions, acreage, county rules, and intended use.